Welcome to HVAC-Talk.com, a non-DIY site and the ultimate Source for HVAC Information & Knowledge Sharing for the industry professional! Here you can join over 150,000 HVAC Professionals & enthusiasts from around the world discussing all things related to HVAC/R. You are currently viewing as a NON-REGISTERED guest which gives you limited access to view discussions

To gain full access to our forums you must register; for a free account. As a registered Guest you will be able to:

Participate in over 40 different forums and search/browse from nearly 3 million posts.

also, and I know you like to come here and ask and chat like we all do but:
if you are the tech that commissioned the drive you should be ABB certified for start up, and you should also have a phone number to call for quick accurate information. Just saying if something is not right you risk destroying a drive and motor why chance it. I have had many issues with start up on ABB drives throught the years, problems are hard to explain on the phone let alone on the www.

call 1800-785-3200 or 1800 help-365

It's hard to stop a Trane.but I have made one helluva living keeping them going.

I am the tech that commisioned this drive. The Pump motor is a 600V 3phase
In group 98 on the ACH550 it is all set up correctly.
Would pump load have anything to do with the low output voltage?

The funny thing is that we have 10 of these drives on site and all of them have low output voltages.

So far the information given is about equivalent to "I have a DDC controller and it is only outputting 4 VDC on Y1, can anyone tell me what's wrong?"
"It's likely the programming/programmer/operator" No where near enough details to give a definite answer.

As others have said you should call tech support. Also if you have 10 onsite doing the same thing then they are probably all setup the same. At least their consistent.
I'd suspect that the startup was done incorrectly and has these drives set to 480VAC for the motor voltage. Possibly there is a setting change you can access or maybe you got an 'American' version of the drive and you simple need to make it Canadian via a setting change. Hopefully you have the correct model number to do this and don't have to change out the drive.

Also from what I am seeing group 98 is only the comm protocol, has nothing to do with the motor settings. Go thru the quick setup and see what the motor rated voltage is set for. Also as requested a full model number will tell us if it is even capable of 600V out to the motor.

"How it can be considered "Open" is beyond me. Calling it "voyeur-ed" would be more accurate." pka LeroyMac, SkyIsBlue, fka Freddy-B, Mongo, IndyBlue
BIG Government = More Dependents
"Any 'standard' would be great if it didn't get bastardised by corporate self interest." MatrixTransform
My 5 yr old son "Dad, Siri is not very smart when there's no internet."